IN-E-HyFlex-V4_10
Rotronic AG
Bassersdorf, Switzerland
Document code
Unit
Instruction Manual
Document Type
HygroFlex transmitter version 4: instruction
manual
Document title
Page
58
of 61
© 2006; Rotronic AG IN-E-HyFlex-V2_10.doc
possible to trigger an alarm, or an action, based on the values measured by one or several devices
and subject to the status of an external contact such as a switch or a push button. The HCA
operates as a stand alone device or can be integrated in a network monitored by a PC with the
HW4 software. For more details, contact your local ROTRONIC representative or visit our website:
www.rotronic-usa.com
19 Electrical Installation Guidelines
Power supply wiring
Heavy machinery and instrumentation should not share the same power supply wiring. If this
cannot be avoided, noise filters and surge protectors should be used. Most UPS devices have
those features already integrated.
General guidelines for signal cables
The following guidelines are derived from European Standard EN 50170 for the transmission of
signals by copper wires.
When planning an installation, the rules provided by EN 50170 should be
followed under consideration of local circumstances to determine the position of machines and
equipment.
All ROTRONIC HygroClip products are tested for Electromagnetic Compatibility according to
following European standards:
-
EN 61000-6-3 + EN 61000-6-1 (residential)
-
EN 61000-6-4 + EN 61000-6-2 (industrial)
Whenever the level of electromagnetic interference is expected to be high, both the instruments
and signal cables should be placed as far away as possible from the source of interference.
In general, signal cables should be installed in bundles or channels / conduits, separate from other
cables as indicated in the table below:
•
Bus signals such as RS485
•
Data signals for PCs, printers etc.
•
shielded analog inputs
•
unshielded direct current (<= 60V)
•
shielded process signals (<= 25 V)
•
unshielded alternate current (<= 25V)
•
coaxial cables for CRT monitors
in common bundles or channels / conduits
•
direct current from 60 V to 400 V
(unshielded)
•
alternate current from 25V to 400 V
(unshielded)
in separated bundles or channels /
conduits, without minimum distance
